Synthetic observables from tECSN models show slower early red-color decline due to higher Ti/Cr and a late-time 12.8 μm Ne II line that strengthens over time, unlike comparable CO deflagration models.
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2026 5representative citing papers
New isotopic data from presolar SiC grains are best reproduced by hydrodynamic models of CO novae, establishing them as the primary source for 1-2% of such grains.
Nebular spectroscopy of low-luminosity Type IIP SNe from ZTF identifies two plausible ECSN candidates but derives an upper limit on the ECSN rate of ≲(5–8)×10² Gpc⁻³ yr⁻¹ implying a sAGB mass window narrower than 0.06 M⊙.
X-ray spectral modeling and timing analysis of V1674 Her constrain its white dwarf mass to 1.09-1.12 solar masses, well below the near-Chandrasekhar value expected from its t2~1 day decline time.
Gravitational redshift data for SDSS J060851.44-005950.3 favor an oxygen-neon core with Bayes factor 2.7 over carbon-oxygen.
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An Ultramassive White Dwarf with a Likely Oxygen-Neon Core
Gravitational redshift data for SDSS J060851.44-005950.3 favor an oxygen-neon core with Bayes factor 2.7 over carbon-oxygen.